Ключевые слова: business, call, card, cell, cellphone, cellular, chip, close up, communication, computer, connection, contact, conversation, digital, electronic, equipment, finger, global, gsm, hand, internet, isolated, key, memory, micro, mobile, mobility, modern, network, number, object, operator, phone, prepaid, provider, reception, security, service, sim, smart, sms, talk, technology, telecommunication, telephone, telephony, white, wireless, wireless technology,